Swaging-die.



A. L. ELIASOFF.

SWAG'ING DIE.

APPLICATION men OCT. 14. 1916.

1,241,3 0, v Patented-Sept. 25,1917.

' I AUOR/VEVS UNITED STATES PATENT @FFTQE.

ABRAHAM L. ELIASOFF, OF NEW YORK, N. Y., ASSIGNOR TO ELIASOFF & BIRNBAUM, A COPARTNEBSI-IIP GOMPOSED oFABRAI-IAM L. ELIASOFF AND CHARLES BIBNBAUM,

SWAGING'r-DIE.

Specification of Letters Patent.

Patented Sept. 25, 1917.

Application filed October 14, 1916. Serial No. 125,541.

To all whom it may concern:

Be it known that I, ABRAHAM L. ELIASOFF, a citizen of the United States, and a resident of the city of New York, borough of the Bronx, in the county of Bronx and State of New York, have invented a new and Improved Swaging-Die, of which the following is a full, clear, and exact descriptlon.

' Among the principal objects which the present invention has in view are: to reduce the time factor in the operation of forming bevels for rings or jewelry mounts; to simplify the operation of forming the bevel; and to provide an apparatus of the character mentioned with means for preventing the stretching beyond a predetermined extent of the upper edge of the metal ring from which the bevel is formed.

Drawings.

Figure 1 is a side view of a swage having bevel formed from said tubular section;

Fig. 6 is a detail view on an enlarged scale showing an end fragment of a swage having an enlarged male die portion in section, an anvil block having a female die portion, and a series of reducing ferrules for regulating the operative effect of the swage;

Fig. 7 is a top view of .a rlng mounting bevel shaped to the form of a horseshoe.

Descm'p tion.

The bevels or mountings for rings with which the present invention has to do, are usually made from strips of metal formed to a circular tube section and the abutted edges soldered. In the subsequent operation of forming the tube section thus constructed, the soldered joint is often broken resulting in a loss of time and often in a loss of material. Y

As seen in the drawings, the die embodies a relatively heavy block 11 in which is formed a beveled socket 12 which constitutes the female portion of the swaging die. The socket 12 is given any desired shape and corresponds with the die head 13 of the swaging punch 14. The head 13 at its larger end is smaller than the punch 14. This arrangement provides an annular shoulder 15 to prevent the bevel 16 passing over the die-head 13 above said shoulder. The shoulder 15 is undercut to prevent the bevel l6 springing away from the tapered surface of the head 13 where it might other wise be wedged between the upper portion of the wedge and the inner surface of the die.

The above outlined arrangement assures the production of a perfect bevel, the upper diameter of which is not stretched beyond the desired dimension, and therefore avoids the necessity of subsequent reduction or fitting.

The forward end 18 of the die .head is made sufliciently small to enter tube sections 17 after the same have been deposited in the beveled socket 12. In the subsequent driving of the punch, the sections 17 are gradually shaped, the lower edge being contracted by the socket 12 and the upper edge being stretched by the die head 13 as shown best in Fig. 1 of the drawings.

In the modified form shown in Fig. 6, the punch 14 has a head 13 elongated to pro vide for swaging a number of bevels of different diameters.

At the junction of the head with the body of the punch, the usual shoulder 15 is formed. When shaping a bevel 16' of smaller diameter at the flared edge than that of the top of the head 13, a number of fillers 19 are employed. The fillers 19 are graduated so that the larger opening of one corresponds with the smaller opening of the other. When the head 13 is sufficiently elongated, a number of such fillers may be employed so that the capacity of the die is materially augmented. The lower edges of the fillers 19 are beveled to form undercut shoulders and operate to prevent the 5 formed therefrom.

Claims.

1. A swaging die comprising a die block 10 having an upwardly-flared die socket; and

a punch having an evenly tapered head corresponding With said socket, said head terminating 111 an annular undercut abut- Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01 Qatents,

ment forming the boundary of the upper end of the taper of said head.

2. A swaging die comprising a die block having an outwardly-flared die socket; a punch having a head corresponding With said socket, said head terminating in an annular undercut abutment forming the boundary of the upper end of said head; and a plurality of filler members corresponding in thickness to the ofi'set of said abutment, the edges of said filler members being parallel With said abutment.

ABRAHAM L. ELIASOFF.

Washington, 1). Ci V 

